File: arm64_32-pointer-extend.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (49 lines) | stat: -rw-r--r-- 1,147 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
; RUN: llc -mtriple=arm64_32-apple-ios7.0 %s -o - | FileCheck %s

define void @pass_pointer(i64 %in) {
; CHECK-LABEL: pass_pointer:
; CHECK: and x0, x0, #0xffffffff
; CHECK: bl _take_pointer

  %in32 = trunc i64 %in to i32
  %ptr = inttoptr i32 %in32 to ptr
  call i64 @take_pointer(ptr %ptr)
  ret void
}

define i64 @take_pointer(ptr %ptr) nounwind {
; CHECK-LABEL: take_pointer:
; CHECK-NEXT: %bb.0
; CHECK-NEXT: ret

  %val = ptrtoint ptr %ptr to i32
  %res = zext i32 %val to i64
  ret i64 %res
}

define i32 @callee_ptr_stack_slot([8 x i64], ptr, i32 %val) {
; CHECK-LABEL: callee_ptr_stack_slot:
; CHECK: ldr w0, [sp, #4]

  ret i32 %val
}

define void @caller_ptr_stack_slot(ptr %ptr) {
; CHECK-LABEL: caller_ptr_stack_slot:
; CHECK-DAG: mov [[VAL:w[0-9]]], #42
; CHECK: stp w0, [[VAL]], [sp]

  call i32 @callee_ptr_stack_slot([8 x i64] undef, ptr %ptr, i32 42)
  ret void
}

define ptr @return_ptr(i64 %in, i64 %r) {
; CHECK-LABEL: return_ptr:
; CHECK: sdiv [[VAL64:x[0-9]+]], x0, x1
; CHECK: and x0, [[VAL64]], #0xffffffff

  %sum = sdiv i64 %in, %r
  %sum32 = trunc i64 %sum to i32
  %res = inttoptr i32 %sum32 to ptr
  ret ptr %res
}